Monster (
http://mydramalist.com/16419-monster) - revenge and business
Triangle - business and revenge
Can You Hear My Heart - business, some revenge, power struggle
Glory Jane - business, some power struggle
Kill Me, Heal Me - some business, power struggle
Mask - business, power struggle, revenge
Protect the Boss - business, some power struggle
Brand - business
New Tales of Gisaeng - business
Equator Man - business, some revenge
Advertising Genius Lee Tae Baek - business, power struggle
Passionate Love - business, power struggle